Page 5 of catalogue Precision rail guides of SKF Linearsysteme GmbH

SKF modular range rail guides The SKF modular range consists of a matrix range of rail guide modules that enables individual permutations of rails and rolling element assemblies. Different requirements for the guides do not call for changes in the design or mechanical environment. The choice of appropriate rail guides is determined solely by the mechanical conditions under which the guide system is to operate. These operating requirements are covered by six different models (Fig. 1) that may be defined as rail guides with: • crossed roller assemblies of the standard LWR series • ball assemblies of the LWRB series • crossed roller assemblies of the optimised LWRE series • crossed roller assemblies with non-slip cage to prevent cagecreep of the LWRE ACS series • needle roller assemblies of the LWRM/LWRV series and • slide coating of the LWRPM/LWRPV series
Fig. 1
AxB

The blue shaded areas in the chart indicate the sizes included in the Modular Range. Experience has shown that some 80 % of applications can be covered by these (Fig. 2). Contrary to the current lack of uniformity within the market, the standard, interchangeable guidance systems of the Modular Range cover almost the entire spectrum of rail

guide applications. The choice of a specific rolling element or, for extreme conditions, of a slide coating, is determined only by the actual operating conditions (Fig. 5). Generally, any rail guide can be operated in the ‘clamped’ or ‘floating’ mode. The design of the rail guides does not impose any special space requirements.

Fig. 2

Market situation

SKF Modular Range

8.5 x 4 Type Size 1

12 x 6 2

18 x 8 3

22 x 11 2211

25 x 12 4

31 x 15 6

44 x 22 9

58 x 28 12

71 x 36 15

83 x 40 18

110 x 55 24

–

–

X

–

–

X

X

O

O

O

O

–

–

X

O

X

X

X

–

–

–

–

LWRE ACS

LWRE ACS

–

–

X

O

O

O

O

–

–

–

–

–

–

–

–

–

O

O

O

O

–

–

–

–

O

–

–

O

O

O

O

–

–

X

X

–

–

–

–

–

–

–

–

–

= Modular Range

X = available ex-stock in standard lengths O = available to order – = not available

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